docs(readme): fix maintainers section look

Author: montogeek

README.md

@@ -102,25 +102,25 @@ Don't hesitate to create a pull request. Every contribution is appreciated. In d
   <tbody>
     <tr>
       <td align="center">
-        <img width="150 height="150"
+        <img width="150" height="150"
         src="https://avatars.githubusercontent.com/sokra?v=3">
         <br />
         <a href="https://github.com/">Tobias Koppers</a>
       </td>
       <td align="center">
-        <img width="150 height="150"
+        <img width="150" height="150"
         src="https://avatars.githubusercontent.com/SpaceK33z?v=3">
         <br />
         <a href="https://github.com/">Kees Kluskens</a>
       </td>
       <td align="center">
-        <img width="150 height="150"
+        <img width="150" height="150"
         src="https://avatars.githubusercontent.com/mobitar?v=3">
         <br />
         <a href="https://github.com/">Mo Bitar</a>
       </td>
-    <tr>
-  <tbody>
+    </tr>
+  </tbody>
 </table>